Lighting fixture



FIG. 1 is a top, front, left side perspective view of the design;

FIG. 2 is a top, rear, perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a rear view thereof.

The broken lines on top of the lighting fixture are included for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a lighting fixture, as shown and described. 